Reviewed · GEOTHERMAL BATHS & LAGOONS
Geothermal Energy Exhibition Entry Ticket
Iceland turns volcanic heat into electricity and hot water at Hellisheiði, one of the world’s largest single-site geothermal power plants. This exhibition lets you see how that process works through hands-on displays, videos, and views into the turbine halls. I like the simple explanations, and I like that you can set your own pace rather than follow a fixed group.
The cold-water, hot-water, and steam valve display makes the process easy to grasp, even if you are not an engineer. The multimedia section on carbon sequestration adds an important modern angle. The main drawback is clear: this is an exhibition attached to the plant, not a walk-through of the operating facility, so you see the machinery from designated viewing areas only.
- Interactive geothermal displays explain how volcanic heat becomes usable energy.
- Free audio guidance adds detail beyond the signs and videos.
- Turbine halls from above give you a look inside the working plant without entering restricted areas.
- Outdoor viewing decks show pipes, separation tanks, a steam regulator, and cooling towers.
- Free parking and flexible timing make this a practical stop on a South Iceland drive.
- About one hour is enough for a focused visit, though you can take up to two hours.
Hellisheiði: Where Iceland’s Geothermal Power Becomes Real

The exhibition is at the Hellisheiði ON Power plant in the Icelandic countryside, southeast of Reykjavík. You are not simply looking at a model or reading about geothermal energy in a city museum. The displays sit beside a functioning power plant, and the machinery outside gives the subject some weight.
Geothermal energy sounds simple at first. Iceland has heat beneath its surface, wells bring hot water and steam upward, and the plant uses that heat to make electricity and provide hot water. The actual system involves several stages, and the exhibition helps you follow those stages without drowning you in technical language.
I especially like the hands-on valve display. You can see the roles of cold water, hot water, and steam in one compact setup. It is the sort of exhibit that turns a complex process into something you can picture later, when you see pipes and steam rising in other parts of Iceland.
The power plant also gives the exhibition a useful sense of scale. You can look toward the turbine halls from the third floor, then step onto the back decks to see pipe systems, separation tanks, a steam regulator, and cooling towers. You remain outside the working plant, but you are still looking at its real equipment.
What You Actually See Inside the Exhibition

Your visit is self-guided. At the front desk, staff can help you get started, and an audio guide is available for visitors to download at no extra cost. You can use the ON Geothermal Exhibit app, or access the guide through the QR code at the front desk.
Bring a phone or tablet that can connect to the internet. This detail matters. The audio guide is not simply a pair of headphones handed to you at arrival. You need a device to download it, and you may want your own headphones for listening.
The audio guide is worth using. The displays are clear on their own, but the extra narration gives you more context and helps connect the separate sections. If you only read the storyboards and watch the film, you can still have a worthwhile visit, but you will miss some of the explanation.
The exhibition uses multimedia in a thoughtful way. Educational films, visual displays, and interactive equipment break up the reading. A video art presentation adds a more creative touch, which may appeal to you after the technical material begins to pile up.
This is not a loud, crowded attraction built around a dramatic ride or a staged demonstration. It is usually a quiet place where you can pause at each display. That suits visitors who enjoy science, geology, engineering, or environmental topics. Families can also use the hands-on sections to make the subject easier for children to understand.
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The Turbine Hall View and Outdoor Decks

The most important expectation to set is that you cannot enter the actual power plant. Safety and security rules restrict access to certified plant employees who have completed the required training. Even the exhibition staff cannot simply walk into the operating areas.
You can, however, look into both the high-pressure and low-pressure turbine halls from the third floor. This gives you a useful view of the plant’s inner workings, although it is not the same as walking among the machinery.
From the outer observation decks, you can see the pipe systems, separation tanks, steam regulator, and cooling towers. These views help connect the exhibition’s diagrams with the real facility outside. On a clear day, the surrounding Icelandic countryside adds to the experience.
If you have visited a hydroelectric station where you could walk through more of the working plant, this may feel limited. The comparison is not quite fair, since geothermal facilities have their own safety and operating needs, but it is still wise to book this as an exhibition rather than a plant tour.
That distinction is the main dividing line for deciding if the ticket suits you. If your goal is to enter industrial spaces and stand beside turbines, choose something else. If you want a clear introduction to geothermal power with controlled views of a major facility, Hellisheiði fits well.
How Long to Allow at Hellisheiði
The advertised visit takes about one to two hours. I would plan on roughly one hour for a focused visit, with more time if you listen to every audio section, watch the videos, and stop to study the displays.
The attraction works well as a flexible stop because you are not tied to a departure time or a group. You can move quickly through familiar material or spend longer on sections that catch your attention. That makes the ticket easier to fit into a South Iceland road trip.
Allow extra time if you are visiting with children. The interactive displays may keep younger visitors interested, while the audio guide and technical panels give adults more to consider. You can also use the viewing decks to make the indoor information more concrete.
The exhibition is close to other South Iceland activities, including the MegaZipline. That makes it especially practical if you are already in the area. It is less compelling as a long detour for someone who has little interest in energy, science, or industrial sites.
The Value of the $21.69 Ticket

At $21.69 per person, this is not an all-day attraction, so the value depends on what you want from the stop. You are paying for access to a well-presented educational exhibition, the self-guided audio material, indoor viewing areas, outdoor decks, and free parking.
For a visitor curious about how Iceland produces energy, the price is reasonable. The exhibition turns an abstract national talking point into a physical process you can see. It also gives you a chance to learn about carbon sequestration, an increasingly important part of the conversation around geothermal operations and emissions.
The value is weaker if you expect a guided plant walk. There is no regular escorted route through the operating areas, and the experience does not include close access to the turbines or control rooms. You should make that distinction before booking, not after arriving.
Free parking helps keep the stop simple and affordable. Since the visit usually takes around an hour, you are not committing a full day or paying for a large package of extras. For a self-directed educational stop on a larger drive, that is a useful balance.
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Why the Audio Guide Matters

The audio guide is the easiest way to get more from the exhibition. Several displays are understandable at a glance, but the narration adds the process behind them. You will get more from the plant views after learning what the pipes, tanks, and turbine halls do.
The guide is included in the admission price. Staff members are available at the front desk to answer questions, but this is not a conventional guided tour with a named guide leading a group from room to room.
That arrangement has both good and bad points. I like being able to pause, skip ahead, or spend extra time with one topic. You do not have to match the speed of a group. On the other hand, if you prefer asking questions as you go, you may find the self-guided format less personal.
The practical lesson is simple: bring a device. The audio guide is downloaded through the ON Geothermal Exhibit app or the QR code at the front desk. If you arrive without a phone, tablet, or internet connection, you may need to rely on the displays and whatever help staff can provide.
A Useful Stop on a South Iceland Route

Hellisheiði works best as part of a larger outing. It is a sensible place to stop while driving through South Iceland, particularly if you want something educational between outdoor sights.
The free parking makes it easy to pull in without adding much planning. You can spend about an hour indoors, step onto the viewing decks, and continue on your way. The stop also provides a change of pace from waterfalls, volcanic sites, and open-air viewpoints.
The setting matters here. You get views of the countryside around the exhibition, not just a sealed room with diagrams. The combination of real plant equipment and open Icelandic scenery helps explain why geothermal power is so important in this country.
Still, do not treat the exhibition as a major sightseeing landmark on the scale of Iceland’s famous waterfalls or volcanic areas. Its appeal comes from the subject and the way it is explained. If geothermal energy is not on your list, the visit may feel short and specialized.
Who Will Enjoy This Most

I would recommend the exhibition to you if you enjoy understanding how places work. It is a good fit for anyone interested in geology, renewable energy, engineering, climate technology, or Iceland’s modern infrastructure.
Families can also get value from the interactive displays. The valve demonstration gives children something physical to watch, while the films and simple panels provide an accessible introduction to energy production.
It is also useful for a rainy or cloudy stretch in a road trip, though the attraction states that poor weather can lead to cancellation. If that happens, you are offered a different date or a full refund.
You may want to skip it if you need an active tour, a personal guide, or unrestricted access to industrial machinery. The exhibition is quiet and self-paced. It asks you to read, listen, watch, and look carefully rather than race from one event to the next.
Service animals are allowed, and most people can participate. Confirmation arrives when you book, and the ticket is mobile, so you do not need a printed voucher.
Booking Timing and Cancellation Flexibility

This experience is often booked about 34 days ahead, which suggests that many people fit it into planned South Iceland itineraries. You do not necessarily need to book a month in advance, but reserving ahead can help if your route has fixed dates.
Free cancellation is available up to 24 hours before the scheduled start time. Cancel within 24 hours and the payment is not refunded, and changes inside that window are not accepted.
The cancellation cut-off follows local Iceland time. Since weather can affect operations, a cancellation caused by poor weather gives you the choice of another date or a full refund.
Should You Book the Geothermal Exhibition?
Book it if you want a clear, well-designed explanation of geothermal power and are happy to explore on your own. The best parts are the interactive steam and water display, the multimedia material, the carbon sequestration section, and the views into the turbine halls and across the plant equipment.
I would pair it with other South Iceland stops rather than make it the sole purpose of a long drive. Bring a phone or tablet for the audio guide, plan on about an hour, and arrive knowing that you will view the power plant rather than enter it.
At $21.69, it offers solid value for curious minds, families, and anyone who wants to understand one of Iceland’s most important energy sources. It is not the right ticket for a behind-the-scenes industrial tour, but as a practical and informative stop beside a working geothermal plant, it earns its place on the route.
FAQ
Where is the Geothermal Energy Exhibition located?
It is at the Hellisheiði ON Power plant in South Iceland, in the Icelandic countryside.
How long does the visit take?
Plan on approximately one to two hours. A focused visit with the main displays usually takes about an hour.
Is this a guided tour?
No. The admission provides a self-guided exhibition with an audio guide available to download. Staff are on-site at the front desk to answer questions.
Can I enter the actual power plant?
No. Safety and security rules prevent visitors from entering the operating plant. You can look into the high-pressure and low-pressure turbine halls from the third floor and see plant equipment from the outdoor decks.
Do I need to bring a phone or tablet?
Bring a phone, tablet, or another internet-connected device if you want to download the audio guide. The guide is available through the ON Geothermal Exhibit app or a QR code at the front desk.
Is parking included?
Yes. Parking at the exhibition is free.
What happens if the experience is canceled because of weather?
You can choose a different date or receive a full refund. For personal cancellations, you must cancel at least 24 hours before the scheduled start time for a full refund.
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